Abstract: A wireless hoist system including a first hoist device having a first motor and a first wireless transceiver and a second hoist device having a second motor and a second wireless transceiver. The wireless hoist system includes a controller in wireless communication with the first wireless transceiver and the second wireless. The controller is configured to receive a user input and determine a first operation parameter and a second operation parameter based on the user input. The controller is also configured to provide, wirelessly, a first control signal indicative of the first operation parameter to the first hoist device and provide, wirelessly, a second control signal indicative of the second operation parameter to the second hoist device. The first hoist device operates based on the first control signal and the second hoist device operates based on the second control signal.

Abstract: A system and method for flight training and evaluation of pilots comprises electronically activated vision restriction glasses that detect the pilot's head position and automatically darken and restrict the pilot's ability to see through the front and side windscreens when the pilot-in-training attempts to see out the windscreen. Thus, the pilot-in-training sees only within the aircraft cockpit, forcing him or her to fly by instruments in the most restricted operational mode.

Abstract: A system and method for flight training and evaluation of pilots comprises electronically activated vision restriction glasses that detect the pilot's head position and automatically darken and restrict the pilot's ability to see through the front and side windscreens when the pilot-in-training attempts to see out the windscreen. Thus, the pilot-in-training sees only within the aircraft cockpit, forcing him or her to fly by instruments in the most restricted operational mode.

Abstract: A miniature, multi-channel, electronically scanned pressure measuring device uses electrostatically bonded silicon dies in a multi-element array. These dies are bonded at specific sites on a glass, pre-patterned substrate. Thermal data is multiplexed and recorded on each individual pressure measuring diaphragm. The device functions in a cryogenic environment without the need of heaters to keep the sensor at constant temperatures.

Abstract: A pressure sensor is provided for cryogenic, high pressure applications. A highly doped silicon piezoresistive pressure sensor is bonded to a silicon substrate in an absolute pressure sensing configuration. The absolute pressure sensor is bonded to an aluminum nitride substrate. Aluminum nitride has appropriate coefficient of thermal expansion for use with highly doped silicon at cryogenic temperatures. A group of sensors, either two sensors on two substrates or four sensors on a single substrate are packaged in a pressure vessel.

Abstract: A pressure sensor is provided for cryogenic, high pressure applications. A highly doped silicon piezoresistive pressure sensor is bonded to a silicon substrate in an absolute pressure sensing configuration. The absolute pressure sensor is bonded to an aluminum nitride substrate. Aluminum nitride has appropriate coefficient of thermal expansion for use with highly doped silicon at cryogenic temperatures. A group of sensors, either two sensors on two substrates or four sensors on a single substrate are packaged in a pressure vessel.

Abstract: A cigarette comprises a hollow rod for directing smoke and air from the lit end of the cigarette to a filter located at the mouth end of the cigarette. The rod is formed of tobacco material and/or other carbonaceous material, together with a binder and preferably an organic or inorganic salt. In one embodiment, the rod is a low density rod, which when lit burns in an inverted fire cone. In a second embodiment, a thin-walled rod is surrounded by a column of leaf tobacco. The thin-walled rod includes a salt, preferably calcium carbonate, in an amount preferably between 25% and 45%, which increases the combustion temperature. It also preferably is perforated to allow smoke generated in the tobacco column to be drawn into the hollow center passage. In either embodiment, the amount of wet particulate matter is reduced due to the improved combustion characteristics.

Abstract: An economically advantageous method is disclosed for the preparation without added solvent of a carbocyclic ether having from 10 to 16 carbon atoms in the ring of the formula ##STR1## wherein R is a straight or branched (C.sub.3 -C.sub.6) chain alkyl group or a benzyl group and n is from 5-11 carbon atoms, which method comprises: (1) reacting under an inert atmosphere a mixture consisting essentially of a carbocyclic alcohol of the formula ##STR2## wherein n is from 5-11 carbon atoms, about 1.5-10 molar equivalents of a straight or branch (C.sub.3 -C.sub.6) chain alkyl halide or benzyl halide and a metal hydride.

Abstract: A silicon pressure die is bonded to a borosilicate substrate above a pneumatic port. A Wheatstone bridge circuit is formed on the silicon pressure die and has bridge elements of silicon doped with boron to a deposit density level of approximately 1.times.10.sup.19 -10.sup.21 boron/cm.sup.3. A current source is provided to excite the Wheatstone bridge circuit. In addition, a temperature sensor is provided to provide temperature readings.

Abstract: Apparatus for measuring the flow of fluid through a main supply line having a restrictive element therein to develop a pressure drop. A shunt fluid flow path bypasses this element. The shunt path includes a conduit having a first electrically heated portion and an unheated portion, each portion respectively having a temperature sensing device associated therewith. Means are provided for varying the voltage supplied to an electrical heater for the first conduit portion to maintain a constant temperature difference between the temperature sensing devices, the amount of voltage supplied being a function of the characteristics of fluid flow through the main supply line.

Abstract: Apparatus for measuring the flow of fluids by thermal means. A flow meter of the heated conduit type is operated in a constant temperature mode to produce two output signals, one proportional to the differential temperature between two points in the fluid and the other proportional to the power required to maintain that temperature differential constant. The power is a measure of the mass flow and the heat capacity of the fluid.